I would like to thank all of you for responding to my question. As you can see everyone has a point of few. You are all breathing when you swim.
A little history - For many years we were taught to swim with the S stroke. Your hand entered the water, pressed down and out then in and up. Your shoulder dropped into the water to help facilitate a strong pull. You opened your hips at the back end of the stroke and flicked water back. There was only one breathing option - back end. As you finished your stroke, your hips were up and you took a breathe.
New stroke - Many swimmers are now incorporating a flatter stroke with the hips leading the action. Coaches debate whether summation of forces is applicable to swimming. Whether it works or not swimmers are following the sequence of hip-shoulder-elbow-hand. If you initiate your stroke with your hip, your shoulder rises above the water and you breathe at the beginning of the stroke. Turning your head to breathe is linked to initial shoulder rotation.
Last week I watched my swimmers swim length after length. I was appalled at what I saw. I videotaped them and showed them that even though they thought they were breathing at the beginning of the stroke they in fact turned their heads very late in the stroke. I stopped practice and asked each person to swim a length of the pool and notice the extended arm on the breathing side. There was nothing special they had to notice but I wanted them to be aware that it was there. The next length I asked them to imagine that the word HIP was written on the palm of that hand. When they were about to pull back they were instructed to flex that wrist, start the hip moving and IMMEDIATELY take a breathe. The reality was that by the time their mouths cleared the water their hand was under their shoulders. They were all breathing earlier in the stroke and then head rotation fit in with shoulder rotation and did not cause any lateral movement of the hips and legs. I asked them to do the same sequence and breathe on the other side. The mechanics were exactly the same.
Keep in mind that just as you have a point of view, this is mine and I could be way off course.
DougStern